cube fuses

[scottbott]

http://www.12voltplanet.co.uk/battery-t ... fuses.html" onclick="window.open(this.href);return false;, anyone used these, if so any good?I have never seen them before

[CovKid]

Useful but would seem to depend on paranoia to sell them. You'd have to have a really messy wiring system to need one of those.

[1664]

would seem to depend on paranoia to sell them. You'd have to have a really messy wiring system to need one of those.

How very dare you!!



They're really good and the high rating of the fuse links make them ideal for the current surge a flattened leisure battery demands. I had to up my game from 50A as even that blew after a few nights Propex and T.V



"messy wiring" indeed!!

[itchyfeet]

1664, I'm puzzled how you made that to work on a standard batt terminal
looks like you just replaced the standard clamp bolt with a longer one?
you need the shoulder washer to insulate the ring terminal from the bolt but I can't see it, whats the red nut doing or is that a plastic nut and shoulder washer?

[1664]

1664, I'm puzzled how you made that to work on a standard batt terminal
looks like you just replaced the standard clamp bolt with a longer one? Correct
you need the shoulder washer to insulate the ring terminal from the bolt but I can't see it, whats the red nut doing or is that a plastic nut and shoulder washer? Not quite, the nut both fastens and insulates, it's all internal. I got mine off RS Components and they weren't as cheap as the link but they're very reassuring to have

[California Dreamin]

Looks like a very simple and effective solution. Looking at the pictures however, does raise a degree of skepticism for the larger capacities (150 amp plus). The contact face (the ring of metal) just doesn't look large enough in area to carry that sort of current.

Martin

[itchyfeet]

Ok looks like a short shoulder washer would do the job then with a longer bolt, what thread is the bolt? Looks like standard M8?

http://www.ebay.co.uk/itm/M4-M5-M6-M8-N ... 5d3e924486" onclick="window.open(this.href);return false;

you are right Martin contact is on one side only where a normal ring contacts both sides

[1664]

Looks like a very simple and effective solution. Looking at the pictures however, does raise a degree of skepticism for the larger capacities (150 amp plus). The contact face (the ring of metal) just doesn't look large enough in area to carry that sort of current.

Martin

It's all down to temperature Martin. You look at the size of any fusewire compared to the size of the circuit wiring and the fuse looks miniscule. That is because the size of the circuit wiring conductors is dictated my the melting point of the insulation whereas the size of the fuse wire is dictated by the melting point of the fuse wire itself, which being metallic is way in excess of the wiring insulation and hence can run much, much hotter and therefore does not require to be oversized to keep the temperature down. That's why overhead pylon cables are not massive in proportion to their current (or insulated) and held by ceramic insulators/supports.
The actual thin fuselink part of the assembly will melt long before the connection metal temperature becomes a concern, even for the plastic locking ring.
Hope I'm not teaching me granny how to suck eggs here

[1664]

Ok looks like a short shoulder washer would do the job then with a longer bolt, what thread is the bolt? Looks like standard M8?

http://www.ebay.co.uk/itm/M4-M5-M6-M8-N ... 5d3e924486" onclick="window.open(this.href);return false;

Not sure what type of plastic the nut on mine is made of but I'm not sure I'd trust nylon. The 'shoulder' is actually part of the nut moulding not a seperate item.

Can't find them on RS now, but they were not bluddy cheap.

[CovKid]

What Bren doesn't tell you is he's also replaced the fusebox with a consumer unit

[marlinowner]

http://uk.rs-online.com/web/p/fuse-hold ... 419298|acc" onclick="window.open(this.href);return false;

http://uk.rs-online.com/web/p/automotive-fuses/3377915/" onclick="window.open(this.href);return false;

[1664]

http://uk.rs-online.com/web/p/fuse-hold ... 419298|acc

http://uk.rs-online.com/web/p/automotive-fuses/3377915/" onclick="window.open(this.href);return false;

Aye, that's them. The nut is still expensive but it looks like the fuses have dropped in price - seem to remember they were around the £8 mark too.